EcoFlow Alternator Chargers Quick Review

Quick read: ~2 minutes, Updated: October 19, 2025

EcoFlow’s 500W and 800W Alternator Chargers are designed to keep your power stations topped up while you drive, providing a convenient off-grid power solution 🚙⚡🔋. They draw power from your vehicle’s alternator, ensuring your portable power station is ready when you arrive at your destination.

Key Differences

The main differences come down to power output and the included cable:

Appearance: Almost visually identical except for cabling.
Weight: 1596g (3.5lbs) vs 2230g (4.9lbs) for main unit.
Includes: 500W comes with XT60i cable, 800W with XT150 cable.
Features: Cable type changes what features are enabled and potential power output.
Compatibility: Both models are compatible with either output cable.

XT150 Cable Advantages

With the XT150 cable, you gain access to all features including:

Adjustable charge rate: 100-500W/100-800W depending on model
Reverse charging: Charge your vehicle’s battery from your EcoFlow in an emergency.
Emergency reverse charging: For deeply depleted batteries.
Battery maintenance mode: Keep your vehicle’s battery healthy when stored.

XT60i Cable Limitations

The XT60i cable restricts functionality and is the source of an annoying issue:

Auto shut-off issue: A significant drawback. The charger shuts off after 30 seconds of inactivity, requiring you to manually turn it on each time. Smart alternators (which adjust voltage output for fuel efficiency) can cause it to shut off while you’re driving.
Fixed 500W charge rate: No adjusting the power output.
No reverse charging.
No battery maintenance.

New Improvements

Notable improvements since the 800W model was released last year:

Supports River and 3rd party power stations: The XT60i cable enables compatibility with other power station brands and EcoFlow’s River series.
Improved fuse block: EcoFlow addressed a previous design flaw in the fuse block, increasing reliability. (I’m awaiting confirmation from EcoFlow if this improved design comes with the 800W model)
Positive electrode extension cable: Added support for more install configurations on both models. Use your own cable or purchase EcoFlow’s 2m extended fuse cable.
Cables now available for purchase separately: XT60i, XT150, custom fit output cable.

Issues & Drawbacks

A few other minor things to consider:

Efficiency: When using the XT60i cable, a slight discrepancy exists between the charger’s reported output and the power station’s input (a few Watts seem to go missing).
Replacement fuse: Included AEP fuse can be difficult to source and might not be sized correctly for the cable.

The Verdict

Your choice depends heavily on the cable and your power station’s compatibility:

If you have an unused XT150 port on your power station: Go with the 800W model for the extra power headroom and access to all features.
If you need to use an XT60i port: Consider the 500W but understand you’re missing out on some functionality and be aware of the auto shut off issue (especially if using with a smart alternator).

EcoFlow’s Alternator Chargers offer a compelling way to charge your power stations on the go. Many more details are available in my full review.

Ready to power up your adventures?

Want more details, including lots of photos? I have used the 800W model for a year now on month long trips.